From: Wang Qi <[email protected]>
Signed-off-by: Guo Xuenan <[email protected]>
Signed-off-by: Wang Qi <[email protected]>
---
dump/main.c | 86 ++++++++++++++++++++++++++++++++++++++++++++++++++++-
1 file changed, 85 insertions(+), 1 deletion(-)
diff --git a/dump/main.c b/dump/main.c
index 8a31345..e4018a7 100644
--- a/dump/main.c
+++ b/dump/main.c
@@ -18,9 +18,11 @@
struct erofsdump_cfg {
unsigned int totalshow;
bool show_inode;
+ bool show_inode_phy;
bool show_superblock;
bool show_statistics;
u64 ino;
+ u64 ino_phy;
};
static struct erofsdump_cfg dumpcfg;
@@ -94,6 +96,7 @@ static void usage(void)
"Dump erofs layout from IMAGE, and [options] are:\n"
" -S show statistic information of the image\n"
" -V print the version number of dump.erofs and exit.\n"
+ " -e # show the inode extent info of nid #\n"
" -i # show the target inode info of nid #\n"
" -s show information about superblock\n"
" --help display this help and exit.\n",
@@ -110,9 +113,14 @@ static int erofsdump_parse_options_cfg(int argc, char
**argv)
int opt;
u64 i;
- while ((opt = getopt_long(argc, argv, "SVi:s",
+ while ((opt = getopt_long(argc, argv, "SVi:e:s",
long_options, NULL)) != -1) {
switch (opt) {
+ case 'e':
+ dumpcfg.show_inode_phy = true;
+ dumpcfg.ino_phy = atoll(optarg);
+ ++dumpcfg.totalshow;
+ break;
case 'i':
i = atoll(optarg);
dumpcfg.show_inode = true;
@@ -408,6 +416,79 @@ static int erofs_get_pathname(erofs_nid_t nid, erofs_nid_t
parent_nid,
return -1;
}
+static void erofsdump_show_inode_phy(void)
+{
+ int err;
+ erofs_nid_t nid = dumpcfg.ino_phy;
+ struct erofs_inode inode = {.nid = nid};
+ char path[PATH_MAX + 1] = {0};
+
+ err = erofs_read_inode_from_disk(&inode);
+ if (err < 0) {
+ erofs_err("read inode %lu from disk failed", nid);
+ return;
+ }
+
+ const erofs_off_t ibase = iloc(inode.nid);
+ const erofs_off_t pos = Z_EROFS_VLE_LEGACY_INDEX_ALIGN(
+ ibase + inode.inode_isize + inode.xattr_isize);
+ erofs_blk_t blocks = inode.u.i_blocks;
+ erofs_blk_t start = 0;
+ erofs_blk_t end = 0;
+ unsigned int extent_count;
+ struct erofs_map_blocks map = {
+ .index = UINT_MAX,
+ .m_la = 0,
+ };
+
+ fprintf(stdout, "Inode: %lu\n", nid);
+ err = erofs_get_pathname(sbi.root_nid, sbi.root_nid, nid, path, 0);
+ if (err) {
+ erofs_err("Path not found\n");
+ return;
+ }
+ fprintf(stdout, "File path: %s\n", path);
+ fprintf(stdout, "File size: %lu\n", inode.i_size);
+
+ switch (inode.datalayout) {
+ case EROFS_INODE_FLAT_INLINE:
+ case EROFS_INODE_FLAT_PLAIN:
+ if (inode.u.i_blkaddr == NULL_ADDR)
+ start = end = erofs_blknr(pos);
+ else {
+ start = inode.u.i_blkaddr;
+ end = start + BLK_ROUND_UP(inode.i_size) - 1;
+ }
+ fprintf(stdout, "Plain blknr: %u - %u\n", start, end);
+ break;
+
+ case EROFS_INODE_FLAT_COMPRESSION_LEGACY:
+ case EROFS_INODE_FLAT_COMPRESSION:
+ err = z_erofs_map_blocks_iter(&inode, &map, 0);
+ if (err)
+ erofs_err("get file blocks range failed");
+
+ start = erofs_blknr(map.m_pa);
+ end = start - 1 + blocks;
+ fprintf(stdout,
+ "Compressed blknr: %u - %u\n", start, end);
+ extent_count = 0;
+ map.m_la = 0;
+ fprintf(stdout, "Ext: logical_offset/length:
physical_offset/length\n");
+ while (map.m_la < inode.i_size) {
+ err = z_erofs_map_blocks_iter(&inode, &map,
+ EROFS_GET_BLOCKS_FIEMAP);
+ fprintf(stdout, "%u: ", extent_count++);
+ fprintf(stdout, "%6lu..%-6lu / %-lu: ",
+ map.m_la, map.m_la + map.m_llen,
map.m_llen);
+ fprintf(stdout, "%lu..%lu / %-lu\n",
+ map.m_pa, map.m_pa + map.m_plen,
map.m_plen);
+ map.m_la += map.m_llen;
+ }
+ break;
+ }
+}
+
static void dumpfs_print_inode(void)
{
int err;
@@ -645,6 +726,9 @@ int main(int argc, char **argv)
if (dumpcfg.show_inode)
dumpfs_print_inode();
+ if (dumpcfg.show_inode_phy)
+ erofsdump_show_inode_phy();
+
exit:
erofs_exit_configure();
return err;
--
2.31.1
